Loki handles logs. Prometheus handles metrics. Here’s a side-by-side look at what they do, how they work, and when to use each.

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Prometheus and Loki are open-source tools used in monitoring solutions. Prometheus collects and stores numerical time-series metrics, while Loki aggregates logs in a resource-efficient manner. Prometheus is ideal for real-time performance monitoring and alerting, while Loki excels in log storage and forensic investigations. Both tools, when integrated with Grafana, provide a comprehensive observability stack for system monitoring and debugging.

Loki vs Prometheus: Side-by-Side Comparison for Logs and Metrics

Key Differences Between Loki and Prometheus

Better Together: The Complementary Approach

Making the Most of Prometheus and Loki Together

Top Observability Solutions for Modern Infrastructure

Moving from Traditional Monitoring to Prometheus